What is the common mistake in the following sentences? Ice cream sundaes is Jorge's favorite dessert. On the wall was several paintings. She is one of the girls who has played soccer.
The common mistake is incorrect subject-verb agreement. This is an easy mistake, especially when sentences have more than one subject. Ice cream sundaes ARE Jorge's favorite dessert. On the wall WERE several paintings. She is one of the girls who HAVE played soccer.
How would you correct this sentence? This hotel is very comfortable we recommend it.
This is a run-on. Run-ons contain two or more independent clauses (ie. complete sentences). To correct a run-on, simply break it into two separate sentences, or add a comma and appropriate conjunction. This hotel is very comfortable. We recommend it. This hotel is very comfortable, and we recommend it.
Is a comma required at the end of a string of items before the conjunction?
It depends. This punctuation is called a serial comma or the Oxford Comma, and it is optional and based on the writer's preference. Rules about the Oxford Comma vary by writing style, though it is recommended by APA, MLA, and Chicago styles.